3684978

Information

• Patent Grant
• 3684978

• References
• Source

• Patent Number

  3,684,978

• Date Filed

  Not available

• Date Issued

  Tuesday, August 15, 1972
  52 years ago

• CPC

  • H01H15/08 - Contact arrangements for providing make-before-break operation
  • H01H13/68 - having two operating members, one for opening and one for closing the same set of contacts
  • H01H13/74 - each contact set returning to its original state only upon actuation of another of the operating members
  • H05B6/6417 - Door interlocks of the microwave heating apparatus and related circuits

• US Classifications

  • 331 - Oscillators
  • 219 - Electric heating
  • 315 - Electric lamp and discharge devices: systems
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems